Classified under: Nouns denoting stable states of affairs. Hypernyms (carcinoma is a kind of...): cancer; malignant neoplastic disease (any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream). Hyponyms (each of the following is a kind of carcinoma):
The first Leica lens was a 50 mm f/3.5 design based on the Cooke triplet of 1893, adapted by Max Berek at Leitz. The lens had five elements in three groupsâthe third group being three cemented elementsâand was initially called the Leitz Anastigmat.n addition to the 50mm normal lens, a 35mm wide angle and a 135 mm telephoto lens were initially available. In the mid-1930s, a legendary soft-focus lens, the Thambar 90mm f/2.2 was designed, and made in small numbers between 1935 and 1949, no more than 3000 units. It is a rare collector's item today.
Typical normal lenses for various film formats for photography are: For a 35 mm camera with a diagonal of 43 mm, the most commonly used normal lens is 50 mm, but focal lengths between about 40 and 58 mm are also considered normal. The 50 mm focal length was chosen by Oskar Barnack, the creator of the Leica camera. Note that the angle of view depends on the aspect ratio as well; a normal lens on 35mm does not have the same view as a normal lens on 645, for example.